bg-image($url)
  background-image url($url + '@2x.png')
  @media (-webkit-min-device-pixel-ratio: 3), (min-device-pixel-ratio: 3)
    background-image url($url + '@3x.png')

// 不换行
no-wrap()
  text-overflow: ellipsis
  overflow: hidden
  white-space: nowrap

// 扩展点击区域
extend-click()
  position: relative
  &:before
    content: ''
    position: absolute
    top: -10px
    left: -10px
    right: -10px
    bottom: -10px
border-1px($color)
  position: relative
  &:after
  	display: block
  	position: absolute
  	left: 0
  	bottom: 0
  	border-top: 1PX solid $color
  	content: ' '
  	width: 100%
border-top-1px($color)
  position: relative
  &:before
  	display: block
  	position: absolute
  	left: 0
  	top: 0
  	border-top: 1PX solid $color
  	content: ' '
  	width: 100%
border-right-1px($color)
  position: relative
  &:after
  	display: block
  	position: absolute
  	right: 0
  	top: 0
  	border-right: 1PX solid $color
  	content: ' '
  	height: 100%
// .mixinClass
//   width: auto
border-none()
  &:after
    display: none